Malicious PDF — malware analysis report

Static analysis result for SHA-256 47bac18bed9c1ef2…

MALICIOUS

PDF

42.3 KB
MD5: 9e0198d76448cbf0d1c400d2d48c6488 SHA-1: d33a27d7cabc8d43f6b5e6bbb47371eee98b1726 SHA-256: 47bac18bed9c1ef22ccd94ee323117471a99a46febc1dad2c1db6d4cd0395b3c
186 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment

The PDF file was flagged by multiple high-severity heuristics, including ML classification and ClamAV detection, indicating it contains malicious content. The presence of an embedded script payload and an embedded file further supports this assessment. The ClamAV detection of 'Pdf.Exploit.Agent-36830' suggests a known exploit targeting PDF vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • ClamAV: Pdf.Exploit.Agent-36830 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36830
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
3b0363d4ad27f1a28f1a85be945a24732ea6d133a16f281e4e15fbc438fc7b24		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 42544 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36830
Obfuscation or payload: unlikely

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